Time controlled radio switch



y 1939. M. s. MARTIGNONI 2,156,601

TIME CONTROLLED RADIO SWITCH Filed Aug. 3, 1937 2 Sheets-Sheet 1 i Q qR3 U l I a h HIHHHHX lllll R M R a 1m g i Q o I 1 (q l h July 18,, 1939.M. s. MARTIGNONI TIIE CONTROLLED RADIO SWITCH Filed Aug. 3, 1937 2Sheets-Sheet 2 Patented July 18, 1939 UNITED STATES PATENT OFFICE TIIHECONTROLLED RADIO SWITCH Application August'3, 1937, Serial No. 157,202

2 Claims.

This invention relates to switches for turning on or turning off radiosand particularly to time controlled means for this purpose.

In radios now on the market, if it is desired to hear one particularprogram and no other, it is necessary that the user remember the exacttime at which such a program comes on the air and then start up theradio by the usual hand switch. It is very often the case that the start0f the program is overlooked in other interests and by the time it isremembered, the particular program is over. Furthermore, if the radioswitch is turned on in time, other matters may prevent the user fromturning it off and other non-interesting or undesired programs will beheard, using up current unnecessarily.

The object of this invention is to provide a very simple time actuatedswitch which may be set to cut in the radio at any instant of timedesired and to cut it oil at the end of a selected period.

Another object is to provide a novel form of means for this purposewhich includes a switch for closing the input circuit of the radio, asecond switch for opening the input circuit of the radio and clock-workhaving means for automatically shifting the first named switch intocircuit closing position at a predetermined and selected time andshifting the second named switch out of its circuit closing positionafter a predetermined and selected time, and provide means whereby thetime actuated switch operating mechanism may be readily set by the user.

My invention is illustrated in the accompanying drawings wherein:

Fig. 1 is a front elevation of my clock-actuated radio switch.

Fig. 2 is a side elevation of the interior mechanism, the casing beingbroken away.

Fig. 3 is a fragmentary section on the line 3-3 of Fig. 2.

Fig. 4 is a section on the line 44 of Fig.

Fig. 5 is a section on the line 5-5 of Fig.

Fig. 6 is a section on the line 6-6 of Fig.

Fig. 7 is a fragmentary perspective view of the contact carried by oneof the levers.

Referring to these drawings, Ill designates the casing of the switchmounted on a base ll having a clock dial I2 on its face with the usualhour and minute hands i3. Disposed within the case is any ordinaryclock-train such as is used in cheap clocks, the train being shown asdriven by a spring l4 and having a key I5 for winding up the spring. Itis not necessary to describe the clock-work or train in detail as manydifierent forms of clock-train can be used and the clock-train isconnected to the hands I3 in any usual or suitable manner.

The clock-train drives two gear wheels I 6 and H, each of which at itscenter has an outwardly projecting hub portion I8 formed at one pointwith an axially extending radial slot I9. The gear wheels are rotated bythe clock-train and are loosely mounted respectively on the shafts orarbors 202l. Carried by each shaft 20 or 10 2| is a finger 22. Eachshaft in the construction shown carries on it a gear wheel 23 engaged bya gear wheel 24, each gear wheel 24 being in turn engaged by a pinion 25or 26. Each of these pinions 25 and 26 is mounted upon a setting shaft,the shafts being designated respectively 21 and 28. These shaftspreferably extend throughto the front of the case and each shaft isoperable by means of a knurled setting head or knob 29. A clock-handsetting head 30 may 20 also be provided connected to the clock-workmechanism in any suitable manner by which the hands l3 may be set incase the clock is fast or slow. The forward end of each shaft 20 or 2|carries a hand 3| operating over a small dial. 25 There are two of thesedials 32 and 33, each having the usual twelve-hour numerals withintermediate iractional graduations. The dial 33 is to indicate when theradio is to go on" and the other dial when it is to go off". Each of the30 disks or gear wheels l6 and I1 is movable longitudinally on thecorresponding shaft 20 or 2| and is urged forward by a spring 34 againstthe radial finger or pin 22. As the pin or finger 22 may be set into anydesired angular position 35 to correspond to any moment of the day, itis obvious that when that period arrives, the gear wheel l6 or IT willhave rotated to a position where the notch or slot i9 will coincide withthe position of the finger 22 and this will permit 40 the correspondinggear wheel to be urged forward by its spring. The gear wheel I! is forthe purpose of shifting the on switch into circuit closing positionwhile the gear wheel I6 is for shifting the off switch to a circuitbreaking 45 position.

The switches are carried in the upper portion of the case i0 and includetwo levers 35 and 35a both pivoted on a common pivot pin 36 extendingthrough the top of the case. The upper portion 50 of the case is formedto provideitwo chambers 31 within which the levers respectively operate,and the upper ends of the levers project out through slots 38 in theupper ends of these chammm. The lower end of each lever carries a ubridging contact 39 formed of a wire or a. strip of metal and shown asincluding a cross-bar spaced outward of the lever and connected to thelever by inwardly extending arms or braces 40. The contact 39 on onelever projects reversely to the contact on the other lever.

The lower end of each chamber has a downwardly opening passage 4|defined by the intermediate insulating block 42 and by the lateralinsulating blocks 43. Upon the supporting shoulders of these blocks aremounted the metallic contacts 44, 45, 46 and 41, each contact having aresilient finger 43 extending into the corresponding passage 4|. Theinput wires 49 of the radio are connected by binding screws 50 to theouter contacts 44 and 41 and the contacts 45 and 46 are connected by awire 49a. When the bridging contacts 39 of both levers are in electricalengagement with the contacts 44 to 41, the circuit through-the radiowill be completed and when either one of the bridging contacts is out ofsuch engagement; the circuit will be broken.

As before stated, the bridging contacts on the levers are reverselymounted relative to each other and thus when the lower end of lever 35is forced outward by the outward movement of wheel IS, the circuit willbe broken while upon the forward movement of the lower end of lever 35a,the circuit is completed. It follows, therefore, that when the lower endof lever 35a is forced backward by pulling the upper end of the leverforward, the circuit will be prepared and upon the forcing back of theupper end of lever 35, the circuit will be closed. Thus when the keys 5|on the levers 34 and 35 are pressed forward, the switch 35 will preparethe input circuit and when the selected moment of time arrives the lowerend of lever 35a will be forced forward, the radio circuit will becompleted and after the program desired to be heard has been completedat a selected time, the circuit will be automatically broken by theforward movement of the wheel l6 due to the slot in the hub [8 of thewheel coinciding with the corresponding finger 22.

It will thus be seen that in operating this device, both switch levers35 and 350. are pulled forward. This shifts the contact 40 of lever 35into a circuit preparing position, as shown in 4, and shifts the contact40 out of its, circuit closing position to the position shown in Fig. 5in full lines. When the instant has been reached when the finger 22coincides with the hub I8 of wheel I'I, then the wheel l1 moves forward,as shown in dotted lines in Fig. 5, causing the contact 40 to close thecircuit through the radio. The radio will then operate until theselected instant of time has been reached when it is to go off, and whenthis time is reached, the wheel it moves forward under the impulse ofits spring 34 and breaks the circuit through the contact 40 and thecontacts 44 and 45. The time at which the circuit will be completed andthe time at which the circuit will be broken is controlled by turningthe knobs on the setting shafts, the glands on the small dialsshowing'the selected I do not wish to be limited to any specific meansfor driving the two switch actuatinggear wheels IGand I! as theclock-work for driving these gear wheels might be of various forms.While I have illustrated my device as applied to a twelve-hour clock, itcan, of course, be as well applied to a twentyfour-hour clock. It isalso obvious that the clock mechanism and the switch mechanism might beenclosed within the radio casing or form an integral part of the radiocasing instead of being in the form of a separate unit. The usualcut-off switch commonly found on radios may be used or this switchomitted and the cutting off or on of the radio be accomplished entirelyby means of the switching mechanism which I have disclosed.

What is claimed is:

l. A time-controlled switch mechanism for turning on a radio and turningit oil at predetermined and selective periods of time, including twopairs of spaced contacts, one of the contacts of one pair beingelectrically connected to one of the contacts of the other pair, theremaining contacts having binding screws whereby they may be connectedin a radio input circuit, two pivoted switch levers associated with thepairs of contacts respectively and each supporting contact adapted tobridge the pair of corresponding contacts, two rotatable motor drivenelements one for each lever mounted for bodily axial movement, springsurging the said rotatable elements axially in one direction, saidelements when shifted under the action of the springs each engaging andmoving its associated switch lever to bring one of said contacts intocircuit closing position and the other of said contacts out of saidcircuit closing position, and means individual to each rotatable elementnormally preventing the axial outward movement thereof, each of saidmeans being manually adjustable to release the corresponding rotatableelement at a predetermined instant of time.

2. A time controlled switch mechanism for turning on or turningofi aradio set at predetermined instants of time, including clockwork, twomanually operable pivoted switch levers, one of said levers beingconstructed and arranged to prepare a radio circuit when the lever isshifted in one direction, the other lever being constructed and arrangedto close said circuit when the lever is shifted in the oppositedirection, two rotatable clockwork driven elements one for each leverand mounted for bodily axial movement, springs urging the rotatableelements axially in one direction, said elements, when shifted under theaction of their springs, each operatively engaging with and shifting itsassociated switch lever to thereby shift one of said levers into acircuit closing position and the other of said levers successively intoa circuit breaking position, and means individual to each rotativeelement normally preventing the axial outward movement thereof, each ofsaid means being manually adjustable to release the correspondingrotatable element and permit its movement under the action of its springat a predetermined instant of time,

MARINO S. MARTIGNONI.

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